Tesla & BYD with V2H & V2G - Bidirectional DC charging confirmed

Yes, true. There is a growing number of HV inverters and battery systems, but 48V still has its place in the home energy storage market as it’s much safer and user-friendly.

Agree, the vehicle communication standard is the main problem, but that’s being addressed with the new version of ISO15118-2 Vehicle-to-grid communication interface.